Uniting glass and plastic / Nam-Phong Nguyen in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 6 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 6 (2020) . - p. 45-47 Titre : Uniting glass and plastic : Innovative glass-plastic hybrid combinations through precise laser structuring Type de document : texte imprimé Auteurs : Nam-Phong Nguyen, Auteur ; Jan Schabel, Auteur Année de publication : 2020 Article en page(s) : p. 45-47 Langues : Anglais (eng) Catégories : Assemblages (technologie) Assemblages multimatériaux Micrographie Polycarbonates Soudage laser Structuration directe par laser Verre Index. décimale : 668.4 Plastiques, vinyles Résumé : Transparent functional and design elements often consist of glass and plastic materials. But there may be problems in bonding them using adhesives or adhesion promoters, since adhesives only have limited aging resistance and glass is usually not easily wetted. High-strength hybrid connections are made possible with a two-step process, in which a laser first creates micro- and nanoscale structures in the glass, into which the plastic melt can subsequently penetrate. Note de contenu : - Laser-structuring of glass materials - Joining with new laser wavelength - Factors influencing the bond strength - Laser structuring of a glass sample by means of CO2 laser radiation : the microstructures are introduced into a glass substrate with a thickness of 3 mm at spacings of 1 mm. This is performed by means of a scanner system, which guides the laser beam over the glass substrate in multiple passes at high speed. When the laser beam impinges on it, the material is vaporized ; the ablated particles can be seen as a yellow jet of flame - Fig. 1 : Glass- plastic hybrid bonds combine the specific advantages of the two material classes. A typical application is a car headlamp, which requires high transparency and shape flexibility - Fig. 2 : Laser-based manufacture of a glass-plastic bond in two steps : Laser structuring and laser joining - Fig. 3 : Glass-plastic hybrid bond after joining : the structured glass sample forms a firm bond with the planar sample of polycarbonate. The plastic was irradiated in the region of the microstructures on an area of 10 mm x 20 mm. Due to the high transparency of a the two joint parts, the molten region can hardly be seen with the naked eye - Fig. 4 : Micrograph of the microstructures : the glass is ablated layer by means of a USP laser beam. Compared to machining by CO laser beam, the high-precision ablation can generate structures with hardly any damage. En ligne : https://drive.google.com/file/d/1tLXMfrHXT0yX1xES0SYw_ZfaaVd9tKHi/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34717 [article]

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